feature: support RunAsGroup of CRI Manager

[starnop]

Signed-off-by: Starnop [email protected]

Ⅰ. Describe what this PR did

In the version v1alpha2 of CRI defined by Kubernetes, RunAsGroup is supported. We should also support it for compatibility.

Ⅱ. Does this pull request fix one issue?

None.

Ⅲ. Why don't you add test cases (unit test/integration test)? (你真的觉得不需要加测试吗？)

Has updated the test cases.

Ⅳ. Describe how to verify it

Ⅴ. Special notes for reviews

Please refer to : https://github.com/kubernetes/kubernetes/blob/d1111a57d9243c55e02e0e66af55c2ddb36f3767/pkg/kubelet/apis/cri/runtime/v1alpha2/api.pb.go#L566

[codecov]

Codecov Report

Merging #2263 into master will increase coverage by 0.16%.
The diff coverage is 92.3%.

@@            Coverage Diff             @@
##           master    #2263      +/-   ##
==========================================
+ Coverage   66.71%   66.88%   +0.16%     
==========================================
  Files         208      208              
  Lines       16937    16954      +17     
==========================================
+ Hits        11299    11339      +40     
+ Misses       4270     4257      -13     
+ Partials     1368     1358      -10

Flag	Coverage Δ
#criv1alpha1test	32.59% <0%> (-0.03%)	⬇️
#criv1alpha2test	36.2% <92.3%> (+0.22%)	⬆️
#integrationtest	39.5% <0%> (ø)	⬆️
#nodee2etest	33.43% <53.84%> (+0.17%)	⬆️
#unittest	23.79% <53.84%> (+0.03%)	⬆️

Impacted Files	Coverage Δ
cri/v1alpha2/cri_utils.go	90.57% <92.3%> (+0.23%)	⬆️
ctrd/watch.go	75.75% <0%> (-4.55%)	⬇️
daemon/mgr/container.go	57.59% <0%> (+0.2%)	⬆️
cri/v1alpha1/cri.go	62.21% <0%> (+0.33%)	⬆️
cri/v1alpha2/cri.go	67.06% <0%> (+0.89%)	⬆️
cri/v1alpha2/cri_wrapper.go	62.4% <0%> (+1.19%)	⬆️
daemon/mgr/system.go	77.86% <0%> (+1.63%)	⬆️
daemon/containerio/cri_log_file.go	88.23% <0%> (+3.92%)	⬆️
daemon/mgr/snapshot.go	94.2% <0%> (+4.34%)	⬆️
... and 1 more

[starnop]

@YaoZengzeng @fuweid PTAL. Thanks. ^0^

[allencloud]

Please help to take a review for this, thanks. @YaoZengzeng

[YaoZengzeng]

If RunAsUsername is "", don't need to initialize it. Its default value is "".

[starnop]

Updated. ^_^

[YaoZengzeng]

Except the minor issue above, LGTM